Abstract
Adaptive cruise control (ACC) systems have several operational modes. Drivers may be unaware of the mode where they are operating, which can cause traffic crashes. To suppress mode confusion, we developed a new interface design methodology in which the designer checks the consistency between the machine and interface model. If two models are inconsistent, the designer modify the machine model, which is called engineer-oriented approach, or modify the interface model, called user-centered approach, of modify both models. Based on engineer- and user-centered approaches, two different ACC user interfaces were designed. In addition, human-in-the-loop experiments were performed using a driving simulator. The experimental results showed that the user-oriented design approach provides a more compact, acceptable, and effective interface that can reduce the driver's mode confusions significantly.
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